Java KeyFactory getProvider()用法及代碼示例

java.security.KeyFactory類的getProvider()方法用於獲取此KeyFactory實例使用的提供程序對象的名稱。

用法:

public final Provider getProvider()

參數：此方法不帶任何參數。

返回值：此方法返回此KeyFactory實例使用的Provider對象的名稱。

下麵是說明getProvider()方法的示例：

示例1:

// Java program to demonstrate 
// getProvider() method 
  
import java.security.*; 
import java.util.*; 
  
public class GFG1 { 
    public static void main(String[] argv) 
    { 
  
        try { 
            // creating object of keyfactory 
            KeyFactory keyFactory 
                = KeyFactory.getInstance("DSA"); 
  
            // getting the Provider 
            // of the KeyFactory keyfactory 
            // by using method getProvider() 
            Provider provider 
                = keyFactory.getProvider(); 
  
            // printing the provider name 
            System.out.println( 
                "Provider name: "
                + provider.getName()); 
        } 
  
        catch (NoSuchAlgorithmException e) { 
  
            System.out.println(e); 
        } 
    } 
}

輸出：

Provider name: SUN

示例2:

// Java program to demonstrate 
// getProvider() method 
  
import java.security.*; 
import java.util.*; 
  
public class GFG1 { 
    public static void main(String[] argv) 
    { 
  
        try { 
  
            // creating the object of KeyFactory 
            KeyFactory sr 
                = KeyFactory 
                      .getInstance("DiffieHellman"); 
  
            // getting the Provider of the KeyFactory sr 
            // by using method getProvider() 
            Provider provider = sr.getProvider(); 
  
            // printing the provider name 
            System.out.println( 
                "Provider name: "
                + provider.getName()); 
        } 
  
        catch (NoSuchAlgorithmException e) { 
            System.out.println(e); 
        } 
    } 
}

輸出：

Provider name: SunJCE

參考： https://docs.oracle.com/javase/9/docs/api/java/security/KeyFactory.html#getProvider–

相關用法

注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 KeyFactory getProvider() method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。